Advertisements
Advertisements
प्रश्न
Write a note on coagulation of blood.
थोडक्यात उत्तर
Advertisements
उत्तर
- Clotting or coagulation is the process of converting the liquid blood into a solid form. This process may be initiated by contact of blood with any foreign surface (intrinsic process) or with damaged tissue (extrinsic process).
- Intrinsic and extrinsic processes involve interaction of various substances called clotting factors by a step wise or cascade mechanism.
- There are in all twelve clotting factors numbered as I to XIII (factor VI is not in active use). Interaction of these factors occurs in cascade manner leading to formation of the enzyme thrombin.
- Thromboplastin helps in the formation of enzyme prothrombinase. This enzyme inactivates heparin and it also converts inactive prothrombin into its active thrombin.
- Thrombin converts soluble blood protein fibrinogen into insoluble fibrin. Fibrin forms a mesh in which platelets and other blood cells are trapped to form the clot.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
State the main function of the Lymphocytes of blood
Oxygen combines with haemoglobin present in RBC and forms _____.
Select the odd one in the following:
Monocytes, Lymphocytes, Basophils, RBC
Why does the number of leucocytes increase during infection?
Explain the Term
Phagocytosis
Name the Following
By which the human body is protected from invading bacteria.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The average life of red blood cells in our body is about 120 hours.
State the Function: R.B.C.
Choose the Odd One Out:
What would happen if platelets were absent in the blood?
